cant find light paths

i see the light path option in many tutorial but i cant find in my blender,does someone knows where i can find it

my blender pc: http://prntscr.com/i9cgv1

other blender pcs: http://prntscr.com/i9chbj

You are using the Blender Render engine and not the Cycles Render engine https://docs.blender.org/manual/en/dev/render/introduction.html#render-engines
Change the render engine on the info header at the top of the blender interface